Uso de canábis e os seus efeitos na saúde mental

: uma scoping review

Abstract

This dissertation addresses the implications of cannabis use on mental health by identifying these effects as reported in the scientific literature. To this end, the scoping review method was employed, involving a systematic search of articles published between 2020 and 2023, resulting in N=42 studies. The main findings indicate a significant association between cannabis use and an increase in psychopathology, such as anxiety, depression, and psychosis. Daily cannabis use is linked to increased symptoms, such as psychosis, post-traumatic stress, and suicidal ideation, while monthly or annual use is associated with reduced adverse effects. The potency of cannabis, particularly tetrahydrocannabinol (THC), correlates with more pronounced negative effects on mental health. Conversely, a higher proportion of cannabidiol (CBD) correlates with a decrease in anxiety symptoms. The conclusions highlight the need for informed regulation of cannabis use, emphasizing prevention and intervention strategies to mitigate risks, especially among vulnerable populations. Future scientific research should consider a detailed description of cannabis, as distinguishing between its compounds and modes of use is essential for understanding its effects on mental health.

Date of Award	8 Jan 2025
Original language	Portuguese
Awarding Institution	Universidade Católica Portuguesa
Supervisor	Maria Carmo Carvalho (Supervisor)